P54x_EN_AD_K84

MiCOM P543, P544, P545, P546

Update Documentation

Current Differential Protection Relays

Platform Hardware Version: K Platform Software Version: 42 & 52 Publication Reference: P54x/EN AD/K84

P54x/EN AD/K84 2011. ALSTOM, the ALSTOM logo and any alternative version thereof are trademarks and service marks of ALSTOM. The other names mentioned, registered or not, are the property of their respective companies. The technical and other data contained in this document is provided for information only. Neither ALSTOM, its officers or employees accept responsibility for, or should be taken as making any representation or warranty (whether express or implied), as to the accuracy or completeness of such data or the achievement of any projected performance criteria where these are indicated. ALSTOM reserves the right to revise or change this data at any time without further notice.

GRID

Update Documentation P54x/EN AD/K84 MiCOM P543, P544, P545. P546

UPDATE DOCUMENTATION

Date: 25th June 2007 Hardware Suffix: K Software Version: 42 and 52 Connection Diagrams: 10P54302xx (xx = 01 to 02)

10P54303xx (xx = 01 to 02) 10P54402xx (xx = 01 to 02) 10P54403xx (xx = 01 to 02) 10P54502xx (xx = 01 to 02) 10P54503xx (xx = 01 to 02) 10P54602xx (xx = 01 to 02) 10P54603xx (xx = 01 to 02)

P54x/EN AD/K84 Update Documentation

MiCOM P543, P544, P545. P546


(AD) -1

P54x UPDATE DOCUMENTATION In the firmware version 0420 and 0520K of P54x, several changes on existing features have been added. These are described with reference to the documentation listed below:

Release Version Documentation

07.08.2006 P54x/EN M/K74 Technical Manual

Document Ref. Section Page No. Description

P54x/EN IT/K74

3.1

7

Functional overview

New cell added after 59N and before 50BF

New cell added at end of the table

2

AC voltage

Nominal voltage figures deleted

6

Distance protection

New paragraph included before diagrams

10

Date & time

New settings data added after Battery Alarm

10

CT & VT Ratios

New settings data added within section

13

Prot comms/IM64

New settings data added within section

14-15

Ground distance

New settings data added

15

Phase current differential protection

New setting added at end of section

15

Scheme logic aided scheme 2

New settings data added

16

Negative sequence overcurrent

Section deleted and replaced with new settings

16-17

Ground overcurrent (earth fault)

New settings added throughout section

IN> I2pol Set: 0.08 amended to 0.02

17

Group 1 sensitive E/F

New settings added throughout section

P54x/EN TD/K74

- 18

Undervoltage protection

Settings amended after V> Measurt & Operate Mode

P54x/EN AD/K84 Update Documentation (AD) -2

MiCOM P543, P544, P545. P546


18

Overvoltage protection

Settings amended after V> Measurt & Operate Mode

18

Underfrequency protection

New section added

18

Overfrequency protection

New section added

18

Rate-of-change of frequency protection New section added

18

Supervision

Settings deleted and replaced after, VTS I2> Inhibit

19

Systems check (P543 & P545)

CSI Phase Angle amended from 5 to 0

19

Auto-reclose (P543 & P545)

1 Pole Dead Time & Dead Time 1amended from 0.20 to 0.05

P54x/EN TD/K74

Continued

21

Measurement 4 New settings added after CH2 No. Dgraded m

1.2 9

Protection communication configuration

New cells added after IM Msg Alarm Lvl and before IM1 Cmd Type

1.3.3

16-19

Distance elements

New cells added throughout table: under headings Z1, 2, 3, P & 4 Dynamic Tilt and Z1, 2, 3, P & 4 Tilt top line.

1.3.4

20-21

Phase differential

Step Size for TMS amended to 0.005 throughout

Two new cells added at end of the table

1.3.5

25

Scheme logic

New data added in SOFT & TOR Tripping & TOR Status

New TOC Delay cells added

1.3.7 28

Phase overcurrrent protection

Step size for >1 TMS amended to 0.005

1.3.8

30

Negative sequence overcurrent

First paragraph new

1.3.10 31-32

Earth fault

New IDG cells added throughout table

P54x/EN ST/K74

1.3.12 34

Sensitive earth fault

New IDG cells added throughout table


(AD) -3


1.3.15

37

Voltage protection

Paragraph 1 amended

Cells amended in measurt & operate mode and additional text added

1.3.16 38

Frequency protection

New section added

1.3.17 39

Independent rate of change

New section added

1.3.18 38-39

Circuit breaker fail New text added in heading and paragraph 1 & 3

Default setting for I< Current Set amended to 0.05 x In

New Poledead Voltage cell added

1.3.19 40-41

Supervision

New cells added from CT Supervision

1.3.20 42

System checks

Expanded CSA Phase Angle setting range

1.3.21 44

Auto-Reclose function

Expanded Dead Time setting range

1.4.3 51

Date and time

New cells added from LocalTime Enable

P54x/EN ST/K74

Continued

1.4.4 52

CV/VT Ratios

New text added in C/S Input cell and VTs Connected cell

1.1 12

Phase differential characteristics

Figure 2: Differential logic diagram

Diagram changed to P1693ENa

1.11.3 34

Reactance line

Additional paragraphs added to section before and after figure 20

1.19.1

42

Power swing detection

Paragraph 2 amended and new text added

Paragraph amended and new text added after figure 25

P54x/EN OP/K74

1.19.5 43

Power swing settings

Paragraph 1 amended


MiCOM P543, P544, P545. P546


1.21 47-48

Switch on to fault

New text added in the last 2 paragraphs

Figure 29: Trip on Close

Pick up 200ms updated to TOC delay

Figure 30: Trip on close based on CNV level detectors

New diagram

1.21.1

49

Switch on to fault mode

New line added in paragraph under heading 3.

1.21.2

49

Trip on reclose mode

New line added in TOR Status paragraph

New text added in TOC Delay paragraph

New line added in TOR Tripping Links paragraph

1.21.3 49

Polarization during circuit energization

New line added at end of last paragraph

1.23.8 62-63

Blocking scheme 1 & 2

Figure 40: Blocking 1

Diagram updated and becomes figure 41

Figure 41: Blocking 2


1.31 76

Negative sequence overcurrent protection

Paragraph 1 amended and new text added

Figure 55: Negative sequence overcurrent non-directional operation

New diagram

1.32

77-78


New line added at end of paragraph 1

Figure 55: Undervoltage - single and three phase tripping mode (single stage)


P54x/EN OP/K74

Continued

1.33

78-79



Figure 59: Overvoltage single and three phase tripping mode (single stage)



(AD) -5


1.37 84

Frequency protection

New section added

Figure 64: Underfrequency logic (single stage)

New diagram

Figure 65: Overfrequency logic (single stage)

New diagram

1.38 84

Independent rate of change

New section added

Figure 66: Rate of change of frequency protection

New diagram

1.38.1 84

Basic functionality

New section added

2.18 92

Auto-Reclose logic diagrams

Figure 67: Auto-reclose single/three pole tripping


2.2.2 99

VT selection


2.5 107

Current transformer supervision

Last paragraph replaced with new text

2.5.1 107-108

Differential CTS

Figure 79: Differential CTS


2.5.2

108

Standard CTS

Figure 80: Voltage dependant CTS principle scheme

Diagram moved to 2.5.3, heading amended and become figure 86

Figure number amended in last paragraph

Figure 87: Standard CTS

New diagram

P54x/EN OP/K74

Continued

3.3.2 143

Permissive Intertrip

Figure 97 in 1st paragraph changed to 104 Paragraph 2 amended

P54x/EN AP/K74

2.2.8 17

Quadrilateral ground resistive reaches

Title amended

New text added after paragraph 1

Figure 4: Example of high resistive zone 1 fault

New diagram


MiCOM P543, P544, P545. P546


2.2.11

18

Delta directional

New text added in paragraph 2

2.2.15 20

Power swing alarming and blocking

New text added at beginning of the section

2.2.16 21

Out of step protection

New text added in last paragraph

2.2.19 27

Switch onto fault mode


New paragraph added before SOFT delay

2.2.20 28

Trip on reclose mode


New paragraph added before TOC delay

2.8 33



2.9 33



4.2 60

Current transformer supervision

New paragraph added

P54x/EN AP/K74

Continued

4.4 60-61

Differential CTS

Last paragraph deleted

P54x/EN PL/K74

1.7

23-40

Description of logic nodes

New description - cells 492 & 506

New section added from 556-574


592 amended to 605

New description added cells 684-698

New line added in 878 description



P54x/EN MR/K74

1.4.8

13-15

Measurement and data quantities

Table updated in Measurement 4 column

New text added before last paragraph


(AD) -7


P54x/EN CM/K74

11

74-99

Setting record

0800 Date & Time : data added

0A00 CT & VT Ratios: data added in 0A0F cell

3200 Dist Elements: data added throughout

3300 Phase Diff: new section

3400 Scheme Logic: data added

3800 Earth Fault: data amended and added throughout

3A00 Sensitive E/F: data amended and added throughout

4300 Freq Protection: new section

4400 DF/DT Protection: new section

4600 Supervision: data amended and added throughout

P54x/EN SG/K74

- 1-6

Logic symbols

New abbreviations included to reflect additional features


MiCOM P543, P544, P545. P546


(AD) -9

INTRODUCTION (P54x/EN IT/K74)

1.2 Functional overview

The P54x distance relay contains a wide variety of protection functions. The protection features are summarized below:

Models

ANSI FEATURE P543 P544 P545 P546

Optocoupled digital inputs 16 16 24 24

Standard relay output contacts 14 14 32 32

Standard and high break output contacts (11) (11) (24) (24)

Dual rated 1A and 5A CT inputs Tripping Mode - single or three pole ABC and ACB phase rotation Multiple password access control levels 87 Phase segregated current differential 2 and 3 terminal lines/cables Feeders with in-zone transformers Suitable for use with SDH/SONET networks (using P594) 21P/21G Distance zones, full-scheme protection 5 5 5 5

Phase elements

Characteristic

Ground elements Mho and quadrilateral

CVT transient overreach elimination Load blinder Easy setting mode Mutual compensation (for fault locator and distance zones)

85 Communication-aided schemes, PUTT, POTT, Blocking, Weak Infeed

Accelerated tripping - loss of load and Z1 extension

50/27 Switch on to fault and trip on recluse - elements for fast fault clearance upon breaker closure

68 Power swing blocking 78 Out of step 67N Directional earth fault (DEF) unit protection

50/51/67 Phase overcurrent stages, with optional directionality 4 4 4 4

50N/51N/ 67N Earth/ground overcurrent stages, with optional directionality 4 4 4 4

51N/67N/SEF Sensitive earth fault (SEF 4 4 4 4


MiCOM P543, P544, P545. P546

Models

ANSI FEATURE P543 P544 P545 P546

67/46 Negative sequence overcurrent, with optional directionality

46BC Broken conductor (open jumper), used to detect open circuit faults 49 Thermal overload protection 27 Undervoltage protection stages 2 2 2 2

59 Overvoltage protection stages 2 2 2 2

59N Residual voltage stages (neutral displacement) 2 2 2 2

81U/O/R

A 4-stage underfrequency, 2-stage overfrequency and an advanced 4-stage rate of change of frequency element as well.

50BF High speed breaker fail. Two-stage, suitable for re-tripping and backtripping

CTS CT supervision (including differential CTS, patent pending)

VTS Current and voltage transformer supervision 79 Auto-reclose - shots supported 4 4

25 Check synchronism, 2 stages with additional system split detection Alternative setting groups 4 4 4 4

FL Fault locator SOE event records 512 512 512 512

Disturbance recorder, samples per cycle. For waveform capture 48 48 48 48

Circuit breaker condition monitoring Graphical programmable scheme logic (PSL) IRIG-B time synchronism Second rear communication port InterMiCOM

64 teleprotection for direct relay-relay communication

High speed, high break (HB) contacts The P54x supports the following relay management functions in addition to the functions illustrated above.

Measurement of all instantaneous & integrated values Circuit breaker control, status & condition monitoring Trip circuit and coil supervision Programmable hotkeys (2) Control inputs Programmable allocation of digital inputs and outputs


(AD) -11

Fully customizable menu texts Power-up diagnostics and continuous self-monitoring of relay Application overview

Figure 1: Functional diagram

TECHNICAL DATA (P54x/EN TD/J74) Ratings

AC Measuring Inputs

Nominal frequency: 50 and 60 Hz (settable) Operating range: 45 to 65Hz Phase rotation: ABC or CBA

AC Current Nominal current (In): 1 and 5 A dual rated. (1A and 5A inputs use different transformer tap connections, check correct terminals are wired). Nominal burden per phase: < 0.15 VA at In Thermal withstand: continuous 4 In for 10s: 30 In for 1s; 100 In Linear to 64 In (non-offset AC current).

AC Voltage Nominal voltage (Vn): 100 to 120 V phase-phase.

Nominal burden per phase: < 0.02 VA at Vn. Thermal withstand: continuous 2 Vn for 10s: 2.6 Vn

Distance Protection


MiCOM P543, P544, P545. P546

All quoted operating times include the closure

of the trip output contact. The following tripping characteristics, show Operating time Versus reach percentage, for faults close to line angle

50Hz Operation

60Hz Operation

Accuracy

Characteristic shape, up to SIR = 30: 5% for on-angle fault (the set line angle) 10% off-angle

(Example: For a 70 degree set line angle, injection testing at 40 degrees would be referred to as off-angle). Zone time delay deviations:

20ms or 2%, whichever is greater.

Sensitivity

Settings < 5/In : (0.05In*5/(setting*In)) 5% Settings > 5/In : 0.05 In 5%

Date and time

IRIG-B Sync: Disabled/Enabled Battery Alarm: Disabled/Enabled LocalTime Enable: Disabled/Fixed/Flexible

LocalTime Offset: -720...720 DST Enable: Disabled or Enabled DST Offset: 30...60 DST Start: First, Second, Third, Fourth, Last DST Start Day: Monday, Tuesday,

Wednesday, Thursday, Friday, Saturday DST Start Month: January, February, March,


(AD) -13

April, May, June, July, August, September, October, November, December DST Start Mins: 0...1425

DST End: First, Second, Third, Fourth, Last DST End Day: Monday, Tuesday,

Wednesday, Thursday, Friday, Saturday DST End Month: January, February, March,

April, May, June, July, August, September, October, November, December

DST End Mins:0...1425 RP1 Time Zone:UTC or Local RP2 Time Zone:UTC or Local Tunnel Time Zone: UTC or Local

CT and VT Ratios

Main VT Primary: 100V...1MV Main VT Sec'y: 80...140V C/S VT Primary: 100V...1MV C/S VT Secondary: 80...140V Phase CT Primary: 1A30kA Phase CT Sec'y: 1A/5A SEF CT Primary: 1A30kA SEF CT Sec'y: 1A/5A MComp CT Primary: 1A30kA MComp CT Sec'y: 1A/5A C/S Input: A-N B-N C-N A-B B-C C-A A-N/1.732 B-N/1.732 C-N/1.732 Main VT Location: Line/Bus CT Polarity: Standard /Inverted CT2 Polarity: Standard /Inverted SEF CT Polarity: Standard /Inverted M CT Polarity: Standard /Inverted VTs Connected: Yes/No

Prot Comms/IM64

Scheme Setup: 2 Terminal/Dual Redundant/3 Terminal Address: 0-0, 1-A20-A, 1-B.20-B Address: 0-0, 1-A20-A, 1-B.20-B,

1-C20-C Comm Mode: Standard/IEEE C37.94 Baud Rate Ch 1: 56kbits/s or 64kbits/s Baud Rate Ch 2: 56kbits/s or 64kbits/s Clock Source Ch1: Internal/External Clock Source Ch2: Internal/External Ch1 N*64kbits/s: Auto, 1, 2, 3... 12 Ch2 N*64kbits/s: Auto, 1, 2, 3... 12 Comm Delay Tol: 0.001s...0.00005s Comm Fail Timer: 0.1s...600s Comm Fail Mode: Ch 1 Failure/Ch 2 Failure/

Ch 1 or Ch 2 Fail/Ch 1 and Ch 2 Fail GPS Sync: Enabled or Disabled


MiCOM P543, P544, P545. P546

Char Mod Time: 0...2s Prop Delay Equal: No operation/Restore CDiff Re-Configuration: Three Ended/Two Ended

(R1&R2)/Two Ended (L&R2)/Two Ended (L&R1)

Channel Timeout: 0.1s...10s IM Msg Alarm: 0%...100% Prop Delay Stats: Disabled/Enabled MaxCh 1 PropDelay: 1m...50ms MaxCh 2 PropDelay: 1m...50ms TxRx Delay Stats: Disabled/Enabled MaxCh1 Tx-RxTime: 1m...50ms MaxCh2 Tx-RxTime: 1m...50ms IM1 Cmd Type: Direct/Permissive IM1 FallBackMode: Default/Latching IMx(x=1 to 8) DefaultValue: 0 or 1 IM9 to IM16: Any mode for IMx (x = 1 to 8)

automatically applies for IMx+8

Ground distance

Z1 Gnd. Reach: 0.05500.00/In Z1 Gnd. Angle: 2090 Z1 Dynamic Tilt: Disabled or Enabled Z1 Tilt top line: -30...30 kZN1 Res. Comp.: 0.0010.00 kZN1 Res. Angle: -18090 kZm1 Mut. Comp.: 0.0010.00 kZm1 Mut. Angle: -18090 R1 Gnd. Resistive: 0.05500.00/In Z1 Sensit Ignd>1: 0.0502.000 In Z2 Gnd. Reach: 0.05500.00/In Z2 Gnd. Angle: 2090 Z2 Dynamic Tilt: Disabled or Enabled Z2 Tilt top line: -30...30 kZN2 Res. Comp.: 0.0010.00 kZN2 Res. Angle: -18090 kZm2 Mut. Comp: 0.0010.00 kZm2 Mut. Angle: -18090 R2 Gnd Resistive: 0.05500.00/In Z2 Sensit Ignd>2: 0.0502.000 In Z3 Gnd. Reach: 0.05500.00/In Z3 Gnd. Angle: 2090 Z3 Dynamic Tilt: Disabled or Enabled Z3 Tilt top line: -30...30 Z3' Gnd Rev Rch: 0.05500.00/In kZN3 Res. Comp.: 0.0010.00 kZN3 Res. Angle: -18090 kZm3 Mut. Comp.: 0.0010.00 kZm3 Mut. Angle: -18090 R3 Gnd Res. Fwd: 0.05500.00/In R3 Gnd Res. Rev: 0.05500.00/In Z3 Sensit Ignd>3: 0.0502.000 In ZP Ground Reach: 0.05500.00/In ZP Ground Angle: 2090 ZP Dynamic Tilt: Disabled or Enabled ZP Tilt top line: -30...30 kZNP Res. Comp.: 0.0010.00 kZNP Res. Angle: -18090 kZmP Mut. Comp.: 0.0010.00 kZmP Mut. Angle: -18090


(AD) -15

RP Gnd Resistive: 0.05500.00/In ZP Sensit Ignd>P: 0.0502.000 In Z4 Gnd. Reach: 0.05500.00/In Z4 Gnd. Angle: 2090 Z4 Dynamic Tilt: Disabled or Enabled Z4 Tilt top line: -30...30 kZN4 Res. Comp.: 0.0010.00 kZN4 Res. Angle: -18090 kZm4 Mut. Comp.: 0.0010.00 kZm4 Mut. Angle: -18090 R4 Gnd. Resistive: 0.05500.00/In Z4 Gnd Sensitivity: 0.0502.000 In

Phase current differential protection

Phase Is1:0.2In...2In Phase Is2:1In...30In Phase k1:30%...150% Phase k2: 30%...150% Phase Char: DT/IEC S Inverse/IEC V Inverse/

IEC E inverse/UK LT Inverse/IEEE M Inverse/IEEE V Inverse/IEEE E Inverse/US Inverse/US ST Inverse

Phase Time Delay: 0s...100s Phase TMS: 0.025...1.2 Phase Time Dial: 0.01...100 PIT Time: 0s...0.2s Ph CT Corr'tion:1...8 Compensation: None/Cap Charging/Vector

Group Susceptance: 1E-8*In...10*In Inrush Restraint: Enabled/Disabled Id High Set: 4*ln...32*ln Vectorial Comp:Yy0 (0 deg)/Yd1 (-30 deg)/

Yy2 (-60 deg)/Yd3 (-90 deg)/Yy4 (-120 deg)/ Yd5 (-150 deg)/Yy6 (180 deg)/Yd7 (+150 deg)/Yy8 (+120 deg)/Yd9 (+90 deg)/Yy10 (+60 deg)/Yd11 (+30 deg)/Ydy0 (0 deg)/ Ydy6 (180 deg)

Phase Is1 CTS: 0.2*In...4*In PIT I Selection: Local or Remote

Scheme logic

Basic Scheme Zone 1 Tripping: Disabled/ Phase only/Ground

only/Phase and Ground tZ1 Ph. Delay: 0s...10s tZ1 Gnd. Delay: 0s...10s Zone 2 Tripping: Disabled/Phase only/

Ground only/Phase and Ground tZ2 Ph. Delay: 0s...10s tZ2 Gnd. Delay: 0s10s Zone 3 Tripping: Disabled/Phase only/

Ground only/Phase and Ground tZ3 Ph. Delay: 0s...10s tZ2 Gnd. Delay: 0s...10s Zone P Tripping: Disabled/Phase only/

Ground only/Phase and Ground tZP Ph. Delay: 0s...10s tZP Gnd. Delay: 0s...10s


MiCOM P543, P544, P545. P546

Zone 4 Tripping: Disabled/Phase only/

Ground only/Phase and Ground tZ4 Ph. Delay: 0s...10s tZ4 Gnd. Delay: 0s...10s

Aided Scheme 1 Aid 1 Selection: Disabled/PUR/PUR

Unblocking/POR/POR/Unblocking/ Blocking 1/Blocking 2/ Prog Unblocking/Programmable

Aid 1 Distance: Disabled/ Phase Only/ Ground only/Phase and Ground

Aid 1 Dist. Dly: 0s...1s Unblocking Delay: 0s...0.1s Aid 1 DEF: Disabled/Enabled Aid 1 DEF Dly: 0s...1s Aid 1 DEF Trip: 1/3 Pole tREV Guard: 0s...0.15s Send on Trip Aided / Z1, Any Trip or None Weak Infeed: Disabled/ Echo/Echo and Trip WI Sngl Pole Trp: Disabled/Enabled WI V< Thresh: 10V...70V WI Trip Delay: 0s...1s Custom Send Mask: Bit 0 = Z1 Gnd/Bit 1 =

Z2 Gnd/Bit 2 = Z4 Gnd/Bit 3 = Z1 Ph/Bit 4 = Z2 Ph/Bit 5 = Z4 Ph/Bit 6 = DEF Fwd/Bit 7 = DEF Rev/Bit

Custom Time PU: 0s...1s Custom Time DO: 0s...1s Aided Scheme 2 (As per Aided Scheme 1 Trip on Close) SOTF Status: Disabled/Enabled Pole

Dead/Enabled ExtPulse/En Pdead + Pulse SOTF Delay: 0.2s...1000s SOTF Tripping: Bit 0 = Zone 1/Bit 1 =

Zone 2/Bit 2 = Zone 3/Bit 3 = Zone P/Bit 4 = Zone 4/Bit5=CNV

T/Status: Disabled/Enabled T/Tripping: Bit 0 = Zone 1/Bit 1 =

Zone 2/Bit 2 = Zone 3/Bit 3 = Zone P/Bit 4 = Zone 4/Bit5=CNV

TOC Reset Delay: 0.1s...2s TOC Delay 0.05s0.2s SOTF Pulse: 0.1s...10s Z1 Extension Z1 Ext Scheme: Disabled/Enabled/En.

on Ch1 Fail/En. On Ch2 Fail/En All Ch Fail/En. anyCh Fail

Z1 Ext Ph: 100%...200% Z1 Ext Gnd: 100%...200% Loss of Load LOL Scheme: Disabled/Enabled/En.

on Ch1 Fail/En. On Ch2 Fail/En All Ch Fail/En. Any Ch Fail

LOL


(AD) -17

Negative sequence overcurrent (neg seq O/C)

I2>1 Function: Disabled DT IEC S Inverse IEC V Inverse IEC E Inverse UK LT Inverse IEEE M Inverse IEEE V Inverse IEEE E Inverse US Inverse US ST Inverse

I2>1 Direction: Non-Directional Directional Fwd Directional Rev

I2>1 Current Set: 0.084.00 In I2>1 Time Delay: 0.00100.00s I2>1 TMS: 0.0251.200 I2>1 Time Dial: 0.01100.00 I2>1 DT Adder: 0.00100.00 I2>1 Reset Char.: DT/Inverse I2>1 tRESET: 0.00100.00s I2>2 Status

(up to): I2>2 tRESET

All settings and options chosen from the same ranges as per the first stage overcurrent, I2>1.

I2>3 Status: Disabled Enabled

I2>3 Direction: Non-Directional Directional Fwd Directional Rev

I2>3 Current Set: 0.0832.00 In I2>3 Time Delay: 0.00100.00s I2>4 Status

(up to): I2>4 Time Delay

All settings and options chosen from the same ranges as per the third stage overcurrent, I2>3.

I2> VTS Blocking: Binary function link string, selecting which Neg. Seq. O/C elements (stages 1 to 4) will be blocked if VTS detection of fuse failure occurs

I2> Char Angle: -9595 o I2> V2pol Set:

0.525.0 (100 110V)

Ground overcurrent (earth fault)

IN>1 Status: Disabled Enabled


MiCOM P543, P544, P545. P546

Enabled VTS Enabled Ch Fail En VTSorCh Fail En VTSandCh Fail

IN>1 Function: DT IEC S Inverse IEC V Inverse IEC E Inverse UK LT Inverse IEEE M Inverse IEEE V Inverse IEEE E Inverse US Inverse US ST Inverse IDG

IN>1 Directional: Non-Directional Directional Fwd Directional Rev

IN>1 Current Set: 0.084.00 In IN1>1 IDG Is: 1...4 IN>1 Time Delay: 0.00100.00s IN>1 TMS: 0.0251.200 IN>1 Time Dial: 0.01100.00 IN>1 Reset Char: DT/Inverse IN>1 tRESET: 0.00100.00s IN1>1 IDG Time: 12 IN>2 Status

(up to): IN>2 tRESET

All settings and options chosen from the same ranges as per the first stage ground overcurrent, IN>1.

IN>3 Status: Disabled Enabled Enabled VTS Enabled Ch Fail En VTSorCh Fail En VTSandCh Fail

IN>3 Directional: Non-Directional Directional Fwd Directional Rev

IN>3 Current Set: 0.0832.00 In IN>3 Time Delay: 0.00100.00s IN>4 Status

(up to): IN>4 Time Delay

All settings and options chosen from the same ranges as per the third stage ground overcurrent, IN>3.

IN> Blocking: Binary function link string, selecting which ground overcurrent elements (stages 1 to 4) will be blocked if VTS detection of fuse failure occurs.

IN> DIRECTIONAL IN> Char Angle: -9595 IN> Polarization:

Zero Sequence Neg Sequence

IN> VNpol Set: 0.540.0V


(AD) -19

IN> V2pol Set: 0.525.0V IN> I2pol Set: 0.021.00 In

Group 1 sensitive E/F

Sens E/F Options: SEF Enabled Wattmetric SEF ISEF>1 Function: IDMT Curve Type

Disabled DT IEC S Inverse IEC V Inverse IEC E Inverse UK LT Inverse IEEE M Inverse IEEE V Inverse IEEE E Inverse US Inverse US ST Inverse IDG

ISEF>1 Directional: Non-Directional Directional Fwd Directional Rev

ISEF>1 Current Set: 0.0050.1 InSEF ISEF1>1 IDG Is: 1...4 ISEF>1 Time Delay: 0 s..200s ISEF>1 TMS: 0.0251.2 ISEF>1 Time Dial: 0.01100 ISEF>1 Reset Char: DT/Inverse ISEF>1 tRESET: 0 s-100s ISEF1>1 IDG Time: 12 ISEF>2 as ISEF>1 ISEF>3 Status:

Disabled Enabled

ISEF>3 Directional: Non-Directional Directional Fwd Directional Rev

ISEF>3 Current Set: 0.050.8 InSEF ISEF>3 Time Delay: 0 s200s ISEF>3 Intertrip: Enabled/Disabled ISEF>4 as ISEF>3 ISEFN> Blocking Bit 0 VTS Blks ISEF>1 Bit 1 VTS Blks ISEF>2 Bit 2 VTS Blks ISEF>3 Bit 3 VTS Blks ISEF>4 Bit 4 A/R Blks ISEF>3 Bit 5 A/R Blks ISEF>4 Bit 6 Not Used Bit 7 Not Used ISEF> Directional ISEF> Char Angle: -9595 deg ISEF> VNpol Set: 0.580V Wattmetric SEF PN> Setting: 0...20InSEF W


MiCOM P543, P544, P545. P546


V< Measur't Mode:

V


(AD) -21

Binary function link string, selecting which frequency elements (stages 1 to 4) will be blocked by the pole-dead logic

Over-frequency protection

F>1 Status: Disabled/Enabled F>1 Setting: 45.0065.00Hz F>1 Time Delay: 0.00100.00s F>2 Status

(up to): F>2 Time Delay

All settings and options chosen from the same ranges as per the 1st stage

Rate-of-change of frequency protection (df/dt protection)

df/dt Avg. Cycles: 612 df/dt>1 Status: Disabled/Enabled df/dt>1 Setting: 0.110.0Hz df/dt>1 Dirn.: Negative/Positive/Both df/dt>1 Time: 0.00100.00s df/dt>2 Status:

(up to): df/dt>4 Time

All settings and options chosen from the same ranges as per the 1st stage.

Supervision

VT Supervision VTS Mode: Measured + MCB, Measured Only or MCB Only VTS Status: Blocking/Indication VTS Reset Mode: Manual/Auto VTS Time Delay: 1s...10s VTS I> Inhibit: 0.08....32 x n VTS I2> Inhibit: 0.05...0.5 x n CTS Mode: Disabled, Standard, I Diff, Idiff + Standard CTS Status: Restrain, Indication, CTS Reset Mode: Manual or Auto CTS Time Delay: 0...10s CTS VN< Inhibit: 0.5V...22V CTS i1>: 0.05*In...4.0*In CTS i2/i1>: 0.05...1 CTS i2/i1>>: 0.05...1

Systems check models P543 and P545

Bus-Line Synchronism and Voltage Checks (System Checks) Voltage Monitors Live Voltage: 1.0132.0V Dead Voltage: 1.0132.0V Synchrocheck (Check Synch) CS1 Status: Disabled/Enabled CS1 Phase Angle: 090 CS1 Slip Control:

None Timer


MiCOM P543, P544, P545. P546

Frequency Both

CS1 Slip Freq: 0.021.00Hz CS1 Slip Timer: 0.099.0s CS2 Status

(up to): CS2 Slip Timer

All settings and options chosen from the same ranges as per the first stage CS1 element.

CS Undervoltage: 10.0132.0V CS Overvoltage: 60.0185.0V CS Diff Voltage: 1.0132.0V CS Voltage Block:

None Undervoltage Overvoltage Differential UV & OV UV & DiffV OV & DiffV UV, OV & DiffV

System Split SS Status: Disabled/Enabled SS Phase Angle: 90175 SS Under V Block: Disabled/Enabled SS Undervoltage: 10.0132.0V SS Timer: 0.099.0s

Auto-reclose (models P543 and P545)

Single Pole Shot: 1/2/3/4 Three Pole Shot: 1/2/3/4 1 Pole Dead Time: 0.055.00s Dead Time 1: 0.05100.00s Dead Time 2: 11800s Dead Time 3: 13600s Dead Time 4: 13600s CB Healthy Time: 13600s Reclaim Time: 1600s AR Inhibit Time: 0.01600.00s Check Sync Time: 0.019999.00s Z2T AR:

(up to): Z4T AR:

No Action Initiate AR Block AR All time-delayed distance zones can be independently set not to act upon AR logic, to initiate a cycle, or to block.

DEF Aided AR: No Action Initiate AR Block AR

TOR: No Action Initiate AR Block AR

I>1 AR: (up to):

I>4 AR: No Action Initiate AR


(AD) -23

Block AR All overcurrent stages can be independently set not to act upon AR logic, to initiate a cycle, or to block.

IN>1 AR: (up to):

IN>4 AR: No Action Initiate AR Block AR All ground/earth overcurrent stages can be independently set not to act upon AR logic, to initiate a cycle, or to block.

ISEF>1 AR: (up to):

ISEF>4 AR: No Action Initiate AR Block AR All ground/earth overcurrent stages can be independently set not to act upon AR logic, to initiate a cycle, or to block.

Mult Phase AR: Allow Autoclose BAR 2 and 3Ph BAR 3 Phase

Dead Time Start: Protection Op Protection Reset

Discrim Time: 0.105.00s System Checks CheckSync1 Close: Disabled/Enabled CheckSync2 Close: Disabled/Enabled LiveLine/DeadBus: Disabled/Enabled DeadLine/LiveBus: Disabled/Enabled DeadLine/DeadBus: Disabled/Enabled CS AR Immediate: Disabled/Enabled SysChk on Shot 1: Disabled/Enabled

Measurements 4

Ch 1 Prop Delay Ch 2 Prop Delay Ch1 Rx Prop Delay Ch1 Tx Prop Delay Ch2 Rx Prop Delay Ch2 Tx Prop Delay Channel 1 Status Channel 2 Status Channel Status: Bit 0= Rx Bit 1= Tx Bit 2= Local GPS Bit 3= Remote GPS Bit 4= Mux Clk F Error Bit 5= Signal Lost Bit 6= Path Yellow Bit 7= Mismatch RxN Bit 8= Timeout Bit 9= Message Level Bit 10= Passthrough

Binary function link strings denoting channel errors, and when self-healing has been


MiCOM P543, P544, P545. P546

initiated in 3-terminal applications.

IM64 Rx Status Statistics Last Reset on Date/Time Ch1 No. Vald Mess Ch1 No. Err Mess Ch1 No. Errored s Ch1 No. Sev Err s Ch1 No. Dgraded m Ch2 No. Vald Mess Ch2 No. Err Mess Ch2 No. Errored s Ch2 No. Sev Err s Ch2 No. Dgraded m Max Ch 1 Prop Delay Max Ch 2 Prop Delay Max Ch1 TxRx Time Max Ch2 TxRx Time Clear Statistics

SETTINGS (P54x/EN ST/K74)

1.2 Protection communication configuration

The column PROT COMMS/ IM64 is used to set up all the differential protection communications parameters required by differential protection and also the parameters required for teleprotection when Differential function is disabled and the relay is working as a Distance relay using InterMiCOM64 for teleprotection purposes.

Each setting below that refers to Channel 2 is visible only when 3 Terminal or Dual redundant teleprotection configuration is set.

InterMiCOM64 input and output mapping has to be done in the Programmable Scheme Logic (PSL).

Setting Range Menu Text Default Setting

Min. Max. Step Size

PROT COMMS/IM64

Scheme Setup 2 Terminal 2 Terminal, Dual Redundant, or 3 Terminal

Settings to determine how many relay ends are connected in the differential zone or how many relays are connected to the teleprotection scheme for the protected line, with two or three ends possible.

For a plain two terminal line, there is an additional option to use dual communication channels, to implement redundancy (i.e. employ a parallel hot-standby path).

Address 0-0 0-0, 1-A20-A, 1-B.20-B

Setting for the unique relay address that is encoded in the Differential message and in the InterMiCOM64 sent message. The aim of setting the address is to establish pairs of relays which will only communicate with each other. Should an inadvertent fiber/MUX misrouting or spurious loopback occur, an error will be logged, and the erroneous received data will be rejected.

As an example, in a 2 ended scheme the following address setting would be correct:

Local relay: 1-A

Remote relay: 1-B

Address 0-0 is a universal address, whereby any relay will be free to communicate with any other (equivalent to disabling of the unique addressing). When PROT COMMS/IM64 is set to loop back mode, the address 0-0 will replace any existing address in the relay.


(AD) -25


Min. Max. Step Size

Address 0-0 0-0, 1-A20-A, 1-B.20-B, 1-C20-C

In 3 terminal schemes, communicating groups of three relays may be configured.

Comm Mode Standard Standard or IEEE C37.94

Setting that defines the data format that will be transmitted on the fiber outputs from the relay.

If the Multiplexer accepts direct fiber inputs according to IEEE C37.94, the IEEE C37.94 setting is selected.

For a direct fiber link between relays, and where the MUX connection is in electrical format (G.703 or V.35 or X.21), the Standard message format needs to be set.

For a setting change to take effect, rebooting of the relay will be required. The Comm Mode setting applies to both channels.

Baud Rate Ch 1 64kbits/s 56kbits/s or 64kbits/s

Channel 1 data rate setting for signaling between ends. The setting will depend on the MUX electrical interface, set 64kbit/s for G.703 and X.21, or generally 56kbit/s for V.35.

For direct fiber connection between relays, 64kbit/s will offer slightly faster data transmission.

The setting is invisible when IEEE C37.94 Comm Mode is selected.

Baud Rate Ch 2 64kbits/s 56kbits/s or 64kbits/s

As Baud Rate Ch1 cell.

Clock Source Ch1 Internal Internal or External

Setting that defines which clock source is used to synchronize data transmissions over channel 1. The setting will depend on communications configuration and external clock source availability. If relays are connected direct fiber over channel 1, Internal setting should be selected. If channel 1 is routed via a multiplexer, either setting may be required (see Application Notes).

Clock Source Ch2 Internal Internal or External

Setting that matches the clock source being used for data synchronization over channel 2.

Ch1 N*64kbits/s 1 Auto, 1, 2, 3, ..or 12

Setting for channel 1 when connected to MUX. When set to Auto P54x will configure itself to match the multiplexer.

The setting is visible only when IEEE C37.94 Comm Mode is selected.

Ch2 N*64kbits/s 1 Auto, 1, 2, 3, ..or 12

Setting for channel 2 when connected to Mux.

The setting is visible only when IEEE C37.94 Comm Mode is selected.

Comm Delay Tol 0.00025s 0.00025s 0.001s 0.00005s

If successive calculated propagation times exceed this time delay setting, the relay will initiate a change in relay setting for a short time period (Char Mod Time setting) and will raise a Comm Delay Alarm.

Fail Timer 10s 0.1s 600s 0.1s

Time delay after which the Channel Fail Alarm will be issued providing that no messages were received during the Channel Timeout period or the Alarm Level is exceeded.


MiCOM P543, P544, P545. P546


Min. Max. Step Size

Comm Fail Mode Ch 1 and 2 Fail Ch 1 Failure/ Ch 2 Failure/ Ch 1 or Ch 2 Fail/ Ch 1 and Ch 2 Fail

Fail mode setting that triggers the Channel Fail Alarm, providing that the Dual Redundancy or 3 ended scheme is set.

Normally the alarm would be raised for any loss of an operational channel (logical OR combination). However, when relays in a 3 ended scheme are deliberately operated in Chain topology AND logic may be used, for indication when the scheme becomes finally inoperative, with no self-healing (signal rerouting) mode possible.

GPS Sync Disabled Enabled or Disabled

To enable (activate) or disable (turn off) the time alignment of current vectors via GPS.

Char Mod Time 0.5s 0 2s 0.0001s

Time delay during which the setting characteristic k1 is increased to 200% after successive calculated propagation delay time exceed the time delay setting Comm Delay Tol

Prop Delay Equal No Operation No operation or Restore CDiff

If a P54x relay working with GPS sample synchronization loses GPS and there is a further switch in the protection communications network, the relay becomes Inhibit. If GPS become active again, the relay will automatically reset. But if not, the user can remove the inhibited condition by using this setting as long as it is ensured that propagation delay times are equal.

The setting is invisible when GPS Sync mode is enabled.

Re-Configuration Three Ended Three Ended, Two Ended (R1&R2) , Two Ended (L&R2) or Two Ended (L&R1)

This setting is to change the scheme from three ended scheme to two ended scheme or vice versa. An in deep explanation of relay performance for each case is given in section P54x/EN_OP

The setting is invisible when 3 Terminal Scheme Setup is selected.

Channel Timeout 0.1s 0.1s 10s 0.1s

A rolling time window beyond which any of the 8 IM signals that are set to Default will be replaced by the corresponding IM_X Default Value setting, providing that no valid message is received on that channel in the meantime. The Chnl Fail Alarm timer will be also initiated.

If only one channel is used, each out of 16 IM signals available that is set to Default will convert to corresponding IM_X Default Value

If a Dual redundant or 3 ended scheme is selected, each out of 8 IM signals available that is set to Default will convert to corresponding IM_X Default Value, but only for the affected channel.

IM Msg Alarm Lvl 25% 0% 100% 1%

Setting that is used to alarm for poor channel quality. If during a fixed 100ms rolling window the number of invalid messages divided by the total number of messages that should be received (based upon the Baud Rate setting) increase above the threshold, a Channel Fail Alarm timer will be initiated.

Prop Delay Stats Enabled Enabled or Disabled

To enable (activate) or disable (turn off) the alarms of Maximum propagation delay time


(AD) -27


Min. Max. Step Size

MaxCh 1 PropDelay 15 ms 1ms 50ms 1ms When the protection communications are enabled, the overall propagation delay divided by 2 is calculated and the maximum value is determined and displayed in Measurements 4 column. This value is displayed and compared against this setting. If the setting is exceeded, an alarm MaxCh1 PropDelay (DDB 1386) is raised. MaxCh 2 PropDelay 15 ms 1ms 50ms 1ms

When the protection communications are enabled, the overall propagation delay divided by 2 is calculated and the maximum value is determined and displayed in Measurements 4 column. This value is displayed and compared against this setting. If the setting is exceeded, an alarm MaxCh2 PropDelay (DDB 1387) is raised

TxRx Delay Stats Enabled Enabled or Disabled

To enable (activate) or disable (turn off) the alarms of absolute difference between the Transmission and Reception propagation delay. This setting is visible only in case that GPS Sync is Enabled.

MaxCh1 Tx-RxTime 15 ms 1ms 50ms 1ms

When the protection communications and GPS Sync are enabled, the absolute difference between the Transmission and Reception propagation delay is calculated and the maximum value is determined and displayed in Measurements 4 column. This value is displayed and compared against this setting. If the setting is exceeded, an alarm MaxCh1 Tx-RxTime (DDB 1388) is raised.

MaxCh2 Tx-RxTime 15 ms 1ms 50ms 1ms

When the protection communications and GPS Sync are enabled, the absolute difference between the Transmission and Reception propagation delay is calculated and the maximum value is determined and displayed in Measurements 4 column. This value is displayed and compared against this setting. If the setting is exceeded, an alarm MaxCh2 Tx-RxTime (DDB 1389) is raised.

IM1 Cmd Type Permissive Direct or Permissive

Setting that defines the operative mode of the received InterMiCOM_1 signal.

When Direct tripping is chosen, for security reasons 2 consecutive valid messages have to be received before a change in the signal status will be acknowledged. That will impose an additional 1-2ms delay comparing to Permissive mode.

Set Direct in Direct Transfer Tripping (Intertripping) applications.

Set Permissive to accommodate any Permissive or Blocking scheme.

IM1 FallBackMode Default Default or Latching

Setting that defines the status of IM1 signal in case of heavy noise and message synchronization being lost.

If set to Latching the last valid IM1 status will be maintained until the new valid message is received.

If set to Default, the IM1 status, pre-defined by the user in IM1 Default Value cell will be set. A new valid message will replace IM1 Default Value, once the channel recovers.

IM1 Default Value 0 0 1 1

Setting that defines the IM1 fallback status.

IM2 to IM8 Cell as for IM1 above

IM9 to IM16 Any mode for IMx (x = 1 to 8) automatically applies for IMx+8


MiCOM P543, P544, P545. P546

1.3.3 Distance elements (only for models with distance option)

The column GROUP x DISTANCE ELEMENTS is used to individually set reaches, line angles, neutral compensation factors, minimum current operating levels and line tilting for resistive phase faults for each zone if the setting mode is set to Advanced. In Simple setting mode, Distance Elements setting can be viewed, but not edited here.


Min. Max. Step Size

PHASE DISTANCE

Z1 Ph. Reach 8/In 0.05/In 500/In 0.01/In Setting for Z1 reach.

Z1 Ph. Angle 70 20 90 1

Setting of line angle for zone 1.

R1 Ph. Resistive 8/In 0.05/In 500/In 0.01/In Setting for Z1 resistive reach. This setting is only visible if Quad is selected.

Z1 Tilt Top Line -3 -30 30 1

Setting of Z1 top reactance line gradient to avoid over-reach for resistive phase faults under heavy load. Minus angle tilts the reactance line downwards.

Z1 Sensit. Iph>1 0.075 x In 0.05 x In 2 x In 0.01 x In

Current sensitivity setting for Z1 that must be exceeded in faulted phases if Z1 is to operate.


Z2 Ph. Angle 70 20 90 1


R2 Ph. Resistive 15/In 0.05/In 500/In 0.01/In Setting for Z2 resistive reach.


Setting of Z2 top reactance line gradient.


Zone 2 current sensitivity.


Z3 Ph. Angle 70 20 90 1


Z3 Ph. Rev Reach 1/In 0.05/In 500/In 0.01/In Setting for Z3 offset (reverse) reach. This setting is only visible if Z3 Offset is enabled in GROUP x DISTANCE SETUP.

R3 Ph. Res Fwd. 25/In 0.05/In 500/In 0.01/In Setting for Z3 resistive reach that defines Quads right hand line.


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Min. Max. Step Size

R3 Ph. Res Rev. 1/In 0.05/In 500/In 0.01/In Setting for Z3 resistive reach that defines Quads left hand line. This is settable only if Phase Chars. is Quad and Z3 offset is enabled otherwise is fixed to 25% of the right hand blinder.





ZP Ph. Reach 20/In 0.05/In 500/In 0.01/In Setting for ZP reach.

ZP Ph. Angle 70 20 90 1

Setting of line angle for zone P.

RP Ph. Resistive 20/In 0.05/In 500/In 0.01/In Setting for ZP resistive reach.

ZP Tilt Top Line -3 -30 30 1

Setting of ZP top reactance line gradient.

ZP Sensit. Iph>P 0.05 x In 0.05 x In 2 x In 0.01 x In

Zone P current sensitivity.

Z4 Ph. Reach 15/In 0.05/In 500/In 0.01/In Setting for Z4 reach. This is a common setting for Z4 time delayed and Z4 high speed elements used in blocking schemes and for current reversal guard.

Z4 Ph. Angle 70 20 90 1


R4 Ph. Resistive 15/In 0.05/In 500/In 0.01/In Setting for ZP resistive reach.





GROUND DISTANCE

Z1 Gnd. Reach 8/In 0.05/In 500/In 0.01/In Setting for Z1 reach.

Z1 Gnd. Angle 70 20 90 1

Setting of line angle (positive sequence) for zone 1.

Z1 Dynamic Tilt Enabled Disabled or Enabled

Setting that enables or disables zone 1 top reactance line dynamic tilting. If set enabled, the top line angle will be automatically shifted by the angle difference between the fault current and negative sequence current, starting from the Z1 Tilt top line angle setting see the next cell. The zone 1 is allowed only to tilt down. If Dynamic tilting is disabled, the top line will be shifted by the Z1 Tilt top line setting (Predetermined tilting by fixed angle).

This setting is visible only when ground characteristic is set to Quad.


MiCOM P543, P544, P545. P546


Min. Max. Step Size

Z1 Tilt top line -3 -30 30 1

Setting of the zone 1 tilt angle. Minus angle tilts the reactance line downwards This setting is visible only when the above setting is visible.

kZN1 Res. Comp. 1 0 10 0.001

Setting of Z1 residual compensation magnitude.

kZN1 Res. Angle 0 -180 90 1

Setting of Z1 residual compensation angle.

R1 Gnd. Resistive 8/In 0.05/In 500/In 0.01/In Setting for Z1 ground resistive reach. This setting is only visible if Quad is selected.

Z1 Sensit. Ignd>1 0.075 x In 0.05 x In 2 x In 0.01 x In

Current sensitivity setting for Z1 that must be exceeded in faulted phase and the neutral if Z1 is to operate.


Z2 Gnd. Angle 70 20 90 1



Setting that enables or disables zone 2 top reactance line dynamic tilting. If set enabled, the top line angle will be automatically shifted by the angle difference between the fault current and negative sequence current, starting from the Z2 Tilt top line angle setting see the next cell. The zone 2, as over-reaching zone, is allowed only to tilt up. If Dynamic tilting is disabled, the top line will be shifted by the Z2 Tilt top line setting (Predetermined tilting by fixed angle).



Setting of the zone 2 tilt angle. Minus angle tilts the reactance line downwards This setting is visible only when the above setting is visible.

kZN2 Res. Comp. 1 0 10 0.001




R2 Gnd. Resistive 15/In 0.05/In 500/In 0.01/In Setting for Z2 ground resistive reach.




Z3 Gnd. Angle 70 20 90 1


Z3 Gnd. Rev Rch 1/In 0.05/In 500/In 0.01/In Setting for Z3 offset (reverse) reach. This setting is only visible if Z3 Offset is enabled in GROUP x DISTANCE SETUP.


(AD) -31


Min. Max. Step Size


Setting that enables or disables Z3 top reactance line dynamic tilting. If set enabled, the top line angle will be automatically shifted by the angle difference between the fault current and negative sequence current, starting from the Z3 Tilt top line angle setting see the next cell. The ZP, as over-reaching zone, is allowed only to tilt up. If Dynamic tilting is disabled, the top line will be shifted by the ZP Tilt top line setting (Predetermined tilting by fixed angle).

This setting is visible only when ground characteristic is set to Quad and Z3 offset disabled.


Setting of the Z3 tilt angle. Minus angle tilts the reactance line downwards This setting is visible only when the above setting is visible.

kZN3 Res. Comp. 1 0 10 0.001




R3 Gnd. Res. Fwd 25/In 0.05/In 500/In 0.01/In Setting for Z3 resistive reach that defines Quads right hand line.

R3 Gnd. Res. Rev 1/In 0.05/In 500/In 0.01/In Setting for Z3 resistive reach that defines Quads left hand line. This is settable only if Ground Chars. is Quad and Z3 offset is enabled otherwise is fixed to 25% of the right hand blinder.



ZP Gnd. Reach 20/In 0.05/In 500/In 0.01/In Setting for ZP reach.

ZP Gnd. Angle 70 20 90 1

Setting of line angle (positive sequence) for zone P.

ZP Dynamic Tilt Enabled Disabled or Enabled

Setting that enables or disables ZP top reactance line dynamic tilting. If set enabled, the top line angle will be automatically shifted by the angle difference between the fault current and negative sequence current, starting from the ZP Tilt top line angle setting see the next cell. The ZP, as over-reaching zone, is allowed only to tilt up. If Dynamic tilting is disabled, the top line will be shifted by the ZP Tilt top line setting (Predetermined tilting by fixed angle).


ZP Tilt top line -3 -30 30 1

Setting of the ZP tilt angle. Minus angle tilts the reactance line downwards This setting is visible only when the above setting is visible.

kZNP Res. Comp. 1 0 10 0.001

Setting of ZP residual compensation magnitude.

kZNP Res. Angle 0 -180 90 1

Setting of ZP residual compensation angle.


MiCOM P543, P544, P545. P546


Min. Max. Step Size

RP Gnd. Resistive 20/In 0.05/In 500/In 0.01/In Setting for ZP ground resistive reach.

ZP Sensit. Ignd>P 0.05 x In 0.05 x In 2 x In 0.01 x In


Z4 Gnd. Reach 15/In 0.05/In 500/In 0.01/In Setting for Z4 reach. This is a common setting for Z4 time delayed and Z4 high speed elements used in blocking schemes and for current reversal guard.

Z4 Gnd. Angle 70 20 90 1



Setting that enables or disables Z4 top reactance line dynamic tilting. If set enabled, the top line angle will be automatically shifted by the angle difference between the fault current and negative sequence current, starting from the Z4 Tilt top line angle setting see the next cell. The Z4, as over-reaching zone, is allowed only to tilt up. If Dynamic tilting is disabled, the top line will be shifted by the Z4 Tilt top line setting (Predetermined tilting by fixed angle).



Setting of the Z4 tilt angle. Minus angle tilts the reactance line downwards This setting is visible only when the above setting is visible.

kZN4 Res. Comp. 1 0 10 0.001




R4 Gnd. Resistive 15/In 0.05/In 500/In 0.01/In Setting for Z4 ground resistive reach.



1.3.4 Phase differential

The column GROUP x PHASE DIFF is used to:

Select the settings of the phase differential characteristic Define CT correction factors Define type of compensation (Capacitive Charging current or phase shift compensation).

If charging current is selected, to set the value of susceptance and if phase shift is chosen, to set the value of vector compensation (P543 and P545 models only)

Enable or Disable inrush restrain in the case of transformers in zone (P543 and P545 models only)

Set the amount of positive sequence current required for Differential current transformer supervision

The column GROUP x PHASE DIFF is invisible if disabled in CONFIGURATION column.


(AD) -33


Min. Max. Step Size

Phase Diff Enabled Enabled or Disabled

To enable (activate) or disable (turn off) the Differential protection function in the group.

Phase Is1 0.2In 0.2In 2In 0.05In

Setting that defines the minimum pick-up level of the relay.

Phase Is2 2In 1In 30In 0.05In

This setting defines the bias current threshold, above which the higher percentage bias k2 is used.

Phase k1 30% 30% 150% 5%

The lower percentage bias setting used when the bias current is below s2. This provides stability for small CT mismatches, whilst ensuring good sensitivity to resistive faults under heavy load conditions.

Phase k2 150% (2 end or dual redundant)

100% (3 end) 30% 150% 5%

The higher percentage bias setting used to improve relay stability under heavy through fault current conditions.

Phase Char DT

DT, IEC S Inverse, IEC V Inverse, IEC E inverse, UK LT Inverse IEEE M Inverse, IEEE V Inverse, IEEE E Inverse, US Inverse, US ST Inverse

Setting for the tripping characteristic for differential protection element.

Phase Time Delay 0s 0s 100s 0.01s

Setting for the time-delay for the definite time setting if selected. The setting is visible only when DT function is selected.

Phase TMS 1 0.025 1.2 0.005

Setting for the time multiplier setting to adjust the operating time of the IEC IDMT characteristic.

Phase Time Dial 0.01 0.01 100 0.01

Setting for the time multiplier setting to adjust the operating time of the IEEE/US IDMT curves. The Time Dial (TD) is a multiplier on the standard curve equation, in order to achieve the required tripping time. The reference curve is based on TD = 1.

Care: Certain manufacturer's use a mid-range value of TD = 5 or 7, so it may be necessary to divide by 5 or 7 to achieve parity.

PIT Time 0.2s 0s 0.2s 0.005s

This timer is initiated upon receipt of PIT flag in the message. Once this timer elapses, and as long as the current is above of Is1 setting, the relay closes its three phase differential trip contacts.

Ph CT Corr'tion 1 1 8 0.01

Setting used to compensate CT ratios mismatch between terminals.


MiCOM P543, P544, P545. P546


Min. Max. Step Size

Compensation None None, Cap Charging, Vector group

Setting to define type of compensation.

If set to None, Susceptance Inrush Restraint, Id High Set and Vectorial Comp are invisible.

If set to Cap Charging, Susceptance setting becomes visible and Inrush Restraint, Id High Set and Vectorial Comp are invisible.

If set to Vector group, Inrush Restraint, Id High Set and Vectorial Comp settings become visible while Susceptance setting is invisible.

Inrush Restraint, Id High Set and Vectorial Comp are only applicable in relay models P543 and P545.

Susceptance 1E-8*In 1E-8*In 10*In 1E-8*In

Visible when Compensation is set to Cap Charging. Setting to define the positive sequence susceptance value of the circuit for capacitive charging current compensation

Inrush Restraint Disabled Enabled or Disabled

Only models P543 and P545 when Compensation is set to Vector group. To enable (activate) or disable (turn off) the additional bias inrush restrain. When set to enable Id High Set becomes visible.

Note: It must be ensure that this function is enabling at each end to avoid maloperation.

Id High Set 4*ln 4*ln 32*ln 0.01*ln

Only in models P543 and P545 when Inrush Restraint is enable. Pick-up setting for high set differential protection

Vectorial Comp Yy0 (0 deg)

Yy0 (0 deg), Yd1 (-30 deg), Yy2 (-60 deg), Yd3 (-90 deg), Yy4 (-120 deg), Yd5 (-150 deg), Yy6 (180 deg), Yd7 (+150 deg), Yy8 (+120 deg), Yd9 (+90 deg), Yy10 (+60 deg), Yd11 (+30 deg), Ydy0 (0 deg), Ydy6 (180 deg)

Only in models P543 and P545 when Vectorial Comp is enable. To define the vector compensation to account for phase shift correction and zero sequence current filtering (for transformer applications)

Phase Is1 CTS 1.2*In 0.2*In 4*In 0.05*In

Setting that defines the minimum pick-up level of the relay when a current transformer supervision CTS is declared

PIT I Selection Remote Local or Remote

Setting that defines the current to be used for the Permissive Intertrip

1.3.5 Scheme logic (basic and aided scheme logic). Only in models with distance option

The column GROUP x SCHEME LOGIC is used to:

Set operating mode and associated timers for each distance zone when distance operates in the Basic scheme

Select aided schemes via one or two available signaling channels Define operating zones during Trip On Close (TOC)


(AD) -35


Min. Max. Step Size

BASIC SCHEME

Zone 1 Tripping Phase and Ground Disabled, Phase only, Ground only, or Phase and Ground

Setting to select for which types of fault Zone 1 elements will be applied.

tZ1 Ph. Delay 0s 0s 10s 0.01s

Time delay for Z1 phase element.

tZ1 Gnd. Delay 0s 0s 10s 0.01s

Time delay for Z1 ground element.



tZ2 Ph. Delay 0.2s 0s 10s 0.01s


tZ2 Gnd. Delay 0.2s 0s 10s 0.01s




tZ3 Ph. Delay 0.6s 0s 10s 0.01s


tZ2 Gnd. Delay 0.6s 0s 10s 0.01s


Zone P Tripping Phase and Ground Disabled, Phase only, Ground only, or Phase and Ground

Setting to select for which types of fault Zone P elements will be applied.

tZP Ph. Delay 0.4s 0s 10s 0.01s

Time delay for ZP phase element.

tZP Gnd. Delay 0.4s 0s 10s 0.01s

Time delay for ZP ground element.



tZ4 Ph. Delay 1s 0s 10s 0.01s


tZ4 Gnd. Delay 1s 0s 10s 0.01s



MiCOM P543, P544, P545. P546


Min. Max. Step Size

AIDED SCHEME 1

Aid. 1 Selection Disabled Disabled, PUR, PUR Unblocking, POR, POR Unblocking, Blocking 1, Blocking 2, Prog. Unblocking or Programmable

Selection of the generic scheme type for aided channel 1. Note: POR is equivalent to POTT (permissive overreach transfer trip), PUR is equivalent to PUTT (permissive underreach transfer trip).

Aid 1 Distance Phase and Ground Disabled, Phase Only, Ground Only, or Phase and Ground

Setting to select whether distance elements should key the scheme selected as per the previous setting. If set to Disabled, no distance zones interact with this aided scheme, and basic scheme tripping only applies.

Aid. 1 Dist. Dly 0s 0s 1s 0.002s

Trip time delay for Aided 1 Distance schemes.

Unblocking Delay 0.05s 0s 0.1s 0.002s

Time delay after Loss of Guard until unblocking occurs. After the set delay, the relay will respond as though an aided signal has been received from the remote end.

This setting is visible only when PUR Unblocking, POR Unblocking or Programmable Unblocking schemes are chosen.

Aid. 1 DEF Enabled Disabled or Enabled

Setting to select whether a DEF scheme should be mapped to Aided scheme 1. (Not applicable where a Permissive Underreaching scheme selection has been made).

Aid. 1 DEF Dly 0s 0s 1s 0.002s

Time delay for Aided 1 DEF tripping.

Aid. 1 DEF Trip 3 Pole 1 or 3 Pole

Setting that defines the tripping mode for Aided 1 DEF.

This setting is visible only if tripping mode under GROUP x LINE PARAMETERS/Trip Mode is set to 1 and 3 pole.

tREV. Guard 0.02s 0s 0.15s 0.002s

Setting for the current reversal guard timer. Intended to keep stability on a healthy line, whilst breakers open on a faulted parallel line to clear the fault.

This setting is visible only when over-reaching or Blocking schemes are selected.

Send on Trip Aided/Z1 Aided/Z1, Any Trip or None

Setting that defines the reinforced trip signal for POR Aided 1 scheme.

If selected to: "None": No reinforced signal is issued

"Aided/Z1": The reinforced signal is issued with aided trip or with Z1 if aided distance scheme is enabled

"Any Trip": Signal is reinforced with Any trip (DDB 522)

Weak Infeed Disabled Disabled, Echo, or Echo and Trip

Setting that defines Aided 1 scheme operation in case of weak infeed conditions, where no protection elements detect the fault at the local end, but an aided channel has been received from the remote end. Setting Echo will allow the received signal to be returned to the remote relay, Trip will allow local end tripping after a set delay.


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Min. Max. Step Size

WI Sngl Pole Trp Disabled Disabled or Enabled

Setting that defines the Weak Infeed tripping mode. When disabled, any WI trip will be converted to a 3 phase trip.

WI V< Thresh. 45V 10V 70V 5V

Setting of Weak Infeed level detector. If phase - ground voltage in any phase drops below the threshold and with insufficient phase current for the protection to operate, the end is declared as a weak infeed terminal.

WI Trip Delay 0.06s 0s 1s 0.002s

Setting for the weak infeed trip time delay.

Custom Send Mask 0000000001

Bit 0 = Z1 Gnd, Bit 1 = Z2 Gnd, Bit 2 = Z4 Gnd, Bit 3 = Z1 Ph, Bit 4 = Z2 Ph, Bit 5 = Z4 Ph, Bit 6 = DEF Fwd, Bit 7 = DEF Rev, Bit

Logic Settings that determine the element or group of elements that are sending a permissive signal to the other line end. For the signal to be sent, the element must operate and a corresponding bit in the matrix must be set to 1 (High). The above mapping is part of a custom made Aided 1 scheme, and unlike all other schemes that are factory tested, the customer must take the responsibility for testing and the operation of the scheme. This setting is visible only if a Programmable or Prog. Unblocking scheme is selected.

Custom Time PU 0s 0s 1s 0.002s

Pick up time delay of DDB signal Aid1 CustomT in, available in the PSL logic. Once the time delay elapses, the DDB signal Aid1 CustomT out will become high.

Custom Time DO 0s 0s 1s 0.002s

Drop off time delay of DDB signal Aid1 CustomT in. Once the time delay elapses, the DDB signal Aid1 CustomT out will become low.

Note that the timer is a combined hard coded PU/DO timer for Custom Aided scheme 1.

AIDED SCHEME 2

All the settings are similar to AIDED SCHEME 1 above. Elements are mapped to the second scheme when they are wished to run independent of Aided Scheme 1.

Trip On Close

SOTF Status Enabled Pole Dead Disabled, Enabled Pole Dead, Enabled ExtPulse, En Pdead + Pulse

Setting that enables note (turns on) or disables (turns off) a special protection logic which can apply upon line energization. SOTF = Switch on to Fault.

Note: SOTF can be enabled in three different manners:

1. Enabled Pole Dead. By using pole dead logic detection logic

2. Enabled ExtPulse. By using an external pulse

3. En Pdead + Pulse. By using both

SOTF Delay 110s 0.2s 1000s 0.2s

The SOTF Delay is a pick up time delay that starts after opening all 3 poles of a CB. If the CB is then closed after the set time delay has expired, SOTF protection will be active. SOTF provides enhanced protection for manual closure of the breaker (not for auto-reclosure).

This setting is visible only if Pole Dead or Pdead + Pulse are selected to enable SOTF.


MiCOM P543, P544, P545. P546


Min. Max. Step Size

SOTF Tripping 000001 Bit 0 = Zone 1, Bit 1 = Zone 2, Bit 2 = Zone 3, Bit 3 = Zone P, Bit 4 = Zone 4, Bit 5 = Current No Volt

Logic Settings that determine the Distance zones that are allowed to operate instantaneously upon line energization. If, for example, Bit 1 is set to 1 (High), Z2 will operate without waiting for the usual tZ2 time delay should a fault lie within Z2 upon CB closure. It also allows a user to map Currents No Volt option for fast fault clearance upon line energisation. SOTF tripping is 3 phase and auto-reclose will be blocked.

TOR Status Enabled Disabled or Enabled

Setting that enables (turns on) or disables (turns off) special protection following auto-reclosure. When set Enabled, TOR will be activated after the TOC Delay has expired, ready for application when an auto-reclose shot occurs. TOR = Trip on (auto) Reclose.

TOR Tripping 000001 Bit 0 = Zone 1, Bit 1 = Zone 2, Bit 2 = Zone 3, Bit 3 = Zone P, Bit 4 = Zone 4, Bit 5 = Current No Volt

Logic Settings that determine the Distance zones that are allowed to operate instantaneously upon line energization. If, for example, Bit 1 is set to 1 (High), Z2 will operate without waiting for the usual tZ2 time delay should a fault lie within Z2 upon CB closure. It also allows a user to map Currents No Volt option for fast fault clearance upon line reclosure on a permanent fault. TOR tripping is 3 phase and auto-reclose will be blocked.

TOC Reset Delay 0.5s 0.1s 2s 0.1s

The TOC Reset Delay is a user settable time window during which TOC protection is available. The time window starts timing upon CB closure and it is common for SOTF and TOR protection. Once this timer expires after a successful (re)closure, all protection reverts to normal.

TOC Delay 0.2s 0.05s 0.2s 0.01s

The TOC Delay is a user settable time delay following the CB opening after which the TOR become active (enabled). The time must be set in conjunction with the Dead Time setting of the Auto-reclose so that the setting must not exceed the minimum Dead Time setting since both timers start instantaneously.

SOTF Pulse 0.5s 0.1s 10s 0.01s

The SOTF Pulse is a user settable time window during which the SOTF protection is available. This setting is visible only if ExtPulse or Pdead + Pulse are selected to enable SOTF

Z1 Extension

Z1 Ext Scheme Disabled Disabled, Enabled, En. on Ch1 Fail, En. On Ch2 Fail, En All Ch Fail, or En. Any Ch Fail

Setting that enables (turns on) or disables (turns off) the Zone 1 Extension scheme. When Enabled, extended Zone 1 will apply unless the Reset Zone 1 Extension DDB signal is energized. Otherwise, it is possible to enable Z1X when aided scheme channel(s) fail.

Z1 Ext Ph 150% 100% 200% 1%

Extended Z1X phase reach as a percentage of the Z1 phase reach. (Phase resistive reach for Z1X is the same as for Zone 1.)

Z1 Ext Gnd 150% 100% 200% 1%

Extended Z1X ground reach as a percentage of Z1 ground reach. (Ground resistive reach and residual compensation for Z1X is the same as for Zone 1.)


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Min. Max. Step Size

Loss of Load

LOL Scheme Disabled Disabled, Enabled, En. on Ch1 Fail, En. On Ch2 Fail, En All Ch Fail, or En. Any Ch Fail

Setting that enables (turns on) or disables (turns off) the Loss of Load scheme. When Enabled, accelerated tripping can apply as the remote end opens (3-pole trip applications only). Otherwise, it is possible to enable Z1X when aided scheme channel(s) fail.

LOL 1 Status Enabled Disabled, Enabled, Enabled VTS, Enabled Ch Fail, En VTSorCh Fail, En VTSandCh Fail

Setting that defines first stage overcurrent operating status. Depending of this setting, I>1 will be enabled permanently or in case of Voltage Transformer Supervision (fuse fail) operation, or in case of communication channel fail, or a combination (and /or) of both.

>1 Function IEC S Inverse DT, IEC S Inverse, IEC V Inverse, IEC E inverse, UK LT Inverse IEEE M Inverse, IEEE V Inverse, IEEE E Inverse, US Inverse, US ST Inverse

Setting for the tripping characteristic for the first stage overcurrent element.

>1 Directional Non-directional Non-directional Directional Fwd Directional Rev

This setting determines the direction of measurement for first stage element.

>1 Current Set 1 x n 0.08 x n 4.0 x n 0.01 x n Pick-up setting for first stage overcurrent element.

>1 Time Delay 1s 0s 100s 0.01s Setting for the time-delay for the definite time setting if selected for first stage element. The setting is visible only when DT function is selected.


MiCOM P543, P544, P545. P546


Min. Max. Step Size

>1 TMS 1 0.025 1.2 0.005 Setting for the time multiplier setting to adjust the operating time of the IEC IDMT characteristic.

>1 Time Dial 1 0.01 100 0.01 Setting for the time multiplier setting to adjust the operating time of the IEEE/US IDMT curves. The Time Dial (TD) is a multiplier on the standard curve equation, in order to achieve the required tripping time. The reference curve is based on TD = 1.


>1 Reset Char. DT DT or Inverse N/A Setting to determine the type of reset/release characteristic of the IEEE/US curves.

>1 tRESET 0s 0s 100s 0.01s Setting that determines the reset/release time for definite time reset characteristic.

>2 Cells as for >1 above

Setting the same as for the first stage overcurrent element.

>3 Status Disabled Disabled, Enabled, Enabled VTS, Enabled Ch Fail, En VTSorCh Fail, En VTSandCh Fail

Setting that defines first stage overcurrent operating status. Depending of this setting, I>3 will be enabled permanently or in case of Voltage Transformer Supervision (fuse fail) operation, or in case of communication channel fail, or a combination (and /or) of both.

>3 Directional Non-directional Non-directional Directional Fwd Directional Rev

N/A

This setting determines the direction of measurement for the overcurrent element.

>3 Current Set 10 x n 0.08 x n 32 x n 0.01 x n Pick-up setting for third stage overcurrent element.

>3 Time Delay 0s 0s 100s 0.01s Setting for the operating time-delay for third stage overcurrent element.

>4 Cells as for >3 Above

Settings the same as the third stage overcurrrent element.

> Char. Angle 30 95 +95 1 Setting for the relay characteristic angle used for the directional decision. The setting is visible only when Directional Fwd or Directional Rev is set.


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Min. Max. Step Size

> Blocking 00001111 Bit 0 = VTS Blocks >1, Bit 1 = VTS Blocks >2, Bit 2 = VTS Blocks >3, Bit 3 = VTS Blocks >4, Bits 5 to 7 are not used.

Logic Settings that determine whether blocking signals from VT supervision affect certain overcurrent stages. VTS Block only affects directional overcurrent protection. With the relevant bit set to 1, operation of the Voltage Transformer Supervision (VTS), will block the stage. When set to 0, the stage will revert to Non-directional upon operation of the VTS. If I> Status is set Enabled VTS, no blocking should be selected in order to provide fault clearance by overcurrent protection during the VTS condition.

1.3.8 Negative sequence overcurrent

The negative sequence overcurrent protection included in the MiCOM P54x provides four stage non-directional/ directional phase segregated overcurrent protection with independent time delay characteristics. The first two stages of negative sequence overcurrent protection have time-delayed characteristics which are selectable between inverse definite minimum time (IDMT), or definite time (DT). The third and fourth stages have definite time characteristics only.


Min. Max. Step Size

2>1 Status Disabled Disabled or Enabled N/A Setting to enable or disable the first stage negative sequence element.

2>1 Function DT Disabled, DT, IEC S Inverse, IEC V Inverse, IEC E Inverse, UK LT Inverse, IEEE M Inverse, IEEE V Inverse, IEEE E Inverse, US Inverse, US ST Inverse

Setting for the tripping characteristic for the first stage negative sequence overcurrent element.

2>1Direction Non-directional Non-directional Directional Fwd Directional Rev

N/A

This setting determines the direction of measurement for this element.

2>1 Current Set 0.2 x n 0.08n 4n 0.01n Pick-up setting for the first stage negative sequence overcurrent element.

2>1 Time Delay 10 0s 100s 0.01s Setting for the operating time-delay for the first stage negative sequence overcurrent element.

2>1 TMS 1 0.025 1.2 0.005 Setting for the time multiplier setting to adjust the operating time of the IEC IDMT characteristic.

2>1 Time Dial 1 0.01 100 0.01 Setting for the time multiplier setting to adjust the operating time of the IEEE/US IDMT curves.


MiCOM P543, P544, P545. P546


Min. Max. Step Size

I2>1 DT Adder 0 0 100 0.01

Setting to add an additional fixed time delay to the IDMT operate time characteristic.

2>1 Reset Char. DT DT or Inverse N/A Setting to determine the type of reset/release characteristic of the IEEE/US curves.

2>1 tRESET 0 0s 100s 0.01s Setting that determines the reset/release time for definite time reset characteristic.

2>2 Cells as for 2>1 Above

2>3 Status Disabled Disabled or Enabled N/A Setting to enable or disable the first stage negative sequence element.

2>3 Direction Non-directional Non-directional Directional Fwd Directional Rev

N/A

This setting determines the direction of measurement for this element.

2>3 Current Set 0.2 x n 0.08n 32n 0.01n Pick-up setting for the first stage negative sequence overcurrent element.

2>3 Time Delay 10s 0s 100s 0.01s Setting for the operating time-delay for the first stage negative sequence overcurrent element.

2>4 Cells as for 2>3 Above

2> VTS Blocking 1111 Bit 00 = VTS blocks I2>1 Bit 01 = VTS blocks I2>2 Bit 02 = VTS blocks I2>3 Bit 03 = VTS blocks I2>4

Logic settings that determine whether VT supervision blocks selected negative sequence overcurrent stages. Setting 0 will permit continued non-directional operation.

2> Char. Angle 60 95 +95 1 Setting for the relay characteristic angle used for the directional decision.

2> V2pol Set 5 0.5 25 0.5 Setting determines the minimum negative sequence voltage threshold that must be present to determine directionality.


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1.3.10 Earth fault

The back-up earth fault overcurrent protection included in the MiCOM P54x provides four stage non-directional/directional three-phase overcurrent protection with independent time delay characteristics. All earth fault overcurrent and directional settings apply to all three phases but are independent for each of the four stages. The first two stages of earth fault overcurrent protection have time-delayed characteristics which are selectable between inverse definite minimum time (IDMT), or definite time (DT). The third and fourth stages have definite time characteristics only.


Min. Max. Step Size

N>1 Status Enabled Disabled, Enabled, Enabled VTS, Enabled Ch Fail, En VTSorCh Fail, En VTSandCh Fail

Setting that defines first stage overcurrent operating status. Depending of this setting, IN>1 will be enabled permanently or in case of Voltage Transformer Supervision (fuse fail) operation, or in case of communication channel fail, or a combination (and /or) of both.

N>1 Function IEC S Inverse DT, IEC S Inverse, IEC V Inverse, IEC E inverse, UK LT Inverse IEEE M Inverse, IEEE V Inverse, IEEE E Inverse, US Inverse, US ST Inverse

Setting for the tripping characteristic for the first stage earth fault overcurrent element.

N>1 Directional Non-directional Non-directional Directional Fwd Directional Rev

This setting determines the direction of measurement for first stage element.

N>1 Current Set 0.2 x n 0.08 x n 4.0 x n 0.01 x n Pick-up setting for first stage overcurrent element.

N1>1 IDG s 1.5 1 4 0.1 This setting is set as a multiple of N> setting for the IDG curve (Scandinavian) and determines the actual relay current threshold at which the element starts.

N>1 Time Delay 1 0 100 0.01 Setting for the time-delay for the definite time setting if selected for first stage element. The setting is available only when DT function is selected.

N>1 TMS 1 0.025 1.2 0.005 Setting for the time multiplier setting to adjust the operating time of the IEC IDMT characteristic.

N>1 Time Dial 1 0.01 100 0.01 Setting for the time multiplier setting to adjust the operating time of the IEEE/US IDMT curves. The Time Dial (TD) is a multiplier on the standard curve equation, in order to achieve the required tripping time. The reference curve is based on TD = 1.


N>1 Reset Char. DT DT or Inverse N/A Setting to determine the type of reset/release characteristic of the IEEE/US curves.

N>1 tRESET 0s 0s 100s 0.01s Setting that determines the reset/release time for definite time reset characteristic.


MiCOM P543, P544, P545. P546


Min. Max. Step Size

N1>1 IDG Time 1.2 1 2 0.01 Setting for the IDG curve used to set the minimum operating time at high levels of fault current.

N>2 Cells as for N>1 above Setting the same as for the first stage earth fault overcurrent element.

N>3 Status Enabled Disabled, Enabled, Enabled VTS, Enabled Ch Fail, En VTSorCh Fail, En VTSandCh Fail

Setting that defines first stage overcurrent operating status. Depending of this setting, IN>3 will be enabled permanently or in case of Voltage Transformer Supervision (fuse fail) operation, or in case of communication channel fail, or a combination (and /or) of both.

N>3 Directional Non-directional Non-directional Directional Fwd Directional Rev

N/A

This setting determines the direction of measurement for the earth fault overcurrent element.

N>3 Current Set 10 x n 0.08 x n 32 x n 0.01 x n Pick-up setting for third stage earth fault overcurrent element.

N>3 Time Delay 0s 0s 100s 0.01s Setting for the operating time-delay for third stage earth fault overcurrent element.

N>4 Cells as for N>3 Above Settings the same as the third stage earth fault overcurrrent element.

N> Blocking 00001111 Bit 0 = VTS Blocks >1, Bit 1 = VTS Blocks >2, Bit 2 = VTS Blocks >3, Bit 3 = VTS Blocks >4, Bits 5 & 6 are not used.

Logic Settings that determine whether blocking signals from VT supervision affect certain earth fault overcurrent stages.

VTS Block - only affects directional earth fault overcurrent protection. With the relevant bit set to 1, operation of the Voltage Transformer Supervision (VTS), will block the stage. When set to 0, the stage will revert to Non-directional upon operation of the VTS.

If IN> Status is set Enabled VTS, no blocking should be selected in order to provide earth fault clearance by earth fault overcurrent protection during VTS condition.

IN> DIRECTIONAL

N> Char. Angle -60 95 +95 1 Setting for the relay characteristic angle used for the directional decision. The setting is visible only when Directional

P54x_EN_AD_K84

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